Switch-point-locking device



Dec. 17, 192.9.

E. MAVES ET AL SWITCH POINT LOCKING DEVICE 2 Sheets-8hee1 Filed July 25, 1 928 ATTORNEY E. w. MAvEs ET AL 1,740,365

SWITCH POINT LOCKING DEVICE Filed July 25, 1928 2 Sheets-Sheet Dec. 1929.

WRVQWF'INVENTORS ATTORNEY Patented Dec. 17, 1929 UNlTED STATES EMIL W. MAVES, OF OWEN, AND WALTER B. LIEWS, OF ARS-FELD, 'lfJ'I-SCGNS'N SWTCH-PONT-LOCKING DEVECE Application filed July 25, 1928. Serial NoV 295,201.

Our present invention fhas reference to a andtlnit` the guide '27 disposed a sl saiety switch .point locking device, our obtance inward of the guide 8, but tli j ject being the provision ot simple, cheaply 7 and 8 have th ,ir conrrontnw ia constructed but thorouo'hb.etiicient means ter ine'. The E"aides o and S receive there- CD t7 locking the switch point close to the main rail, through a slide bar 9, while pivoted, as l0, except when the train crew is using the in the guide i there the end il oit our iin- Switeh. proved locking plate l2. rihe elise-t end oil:

rlfhe `invention will be fully and coniprethe locking ite l2 maybe oiiset in opposite hensively understood ironiaconsideration oi' directions u -tn respect to the lon i 10 the following detailed. description .when read plane ot the said plate, in accordance w i.

in connection with the accompanying drawside off the head block on which the plate ings which form part oi' the ap lication, with is arranged, the said end ll beingoffset in the understanding, however, that the iniorder that the body of the locking plate may proveinent is capable ot' extended application be in snug engagement with one of the sides and is not conined `to the exact showing of of the slide bar S). The locking pl i2, on the drawings nor to the precise construction its upper edge is termed with a depr ssion i3, described and, therefore, such changes and one of the end walls provided by the said n'iodilications may be nia-de therefrom as do depression, that next to the end il, being not'aii'ect the spirit of thei yention nor eX- formed with a hook extension let which, L s

V :eed the scope 4t-hereoi:1 as expressed in the disclosed by Figure 3 of the drawings, oyerappended claims. hes the inner base vila ge or one oi the main ln thefdrawings: rails. rllhe second wall provided by the Figure l is a plan view of our improvement. notch 13 is indicated by the numeral lo and Figure is a side elevation thereof, with is straight. This wall l5 is designed to enparts broken away and the rails or switch gage with the outer base flange of the switch points being in section. rail for holding the switch rail against the Figure 3 is an enlarged detail elevation, main rail when the slide bar 9 has been actuwith parts in section, to better illustrate the ated in a manner which will presently be delocking plate and its engagement with the scribed eo slide bar. rlhe slide is formed on its upper edge with Figure'll is a transversesectional view apa substantially l-shaped projection i6 and proximately onthe line H of .Figure 3. in aline with the inner wall oit' this projec- Figure is a detail sectional view apprOXltion the said bar is formed with an angle mately on the line 5-5 otFigure l. slot l?. This slot receives the through a Figureis aplan view of the latching plate bolt or pivot 18 that pass transversely but showing the saine provided with an eX- through the locking bar l2, outward of the tension as when employed on the oppOS@ shoulder l5 thereof. Then the device is enisides of the rails to those disclosed by Elle ployed on the second side of the traclr to that drawings. disclosed by the drawings, the locking bar 40" Referring now to the drawings in detail, is extended -a suitable distance beyond its the numerals l-l designate respectively the shoulder l5 and is provided with an openinain rails and the siding rails of a railway ing-19 for a pivot similar to the pivot 18.

system, 2 the slidable switch points, 3 the The slide bar 9 has its outer end connected `ties upon which the main and siding rails are to the crank portion 2O ot a sha' 2l. This spiked and l the head block. 0n the top of shaft is journaled through suitable bearing the head block we bolt the upper plates 5 of openings in 'the base portion 22 of a twoguides 6,7 and 8, respectively. By reference part stand. rlhe confronting edges oi the t0 the drawings it Will be seen that the rec sections ot the stand are spaced roni each tangular or channel portions of the guides other and are held so spaced by means 23.

extend along the saine side of the head block, Secured to the sha-tt 2l and received between the segmental side plates of the stand sections 22 there is the throw lever 24C for the slide bar 9. This throw lever is, of course, lixedly secured to the shaft 21. By reference to the drawings it will be seen that the upper and lower walls provided by the segmental sides of the stand 22 are formed with spaced pairs of substantially rectangular notches 25-25 and 25-26, respectively. These notches are designed to receive therein blocks 27 and 28, respectively, which are guided through the widened and slotted end of the throw lever 24 and which blocks are secured to a rod 29 that has an operating handle 30 which is pivotally secured to the throw lever 24.

rlhe rod 29 is influenced by a spring 31 so that its blocks 28 are normally held in either of the series of notches in the stand. By this arrangement it will be noted that when the throw lever is in its vertical position and the locking plate is in its inactive position as disclosed by Figure 3 of the drawings, the throw lever cannot be accidentally actuated.

The throw lever and its stand 22 are located. in close proximity to the switch stand 32. rlhe switch stand is provided with the usual turnable rod 33 that carries the semaphore 34, the lower end of the said rod being cranked and pivotally connected to the throw rod 35 for the connecting 0r bridle bar 36 that carries the clamps 37 that are bolted to the confronting faces of the switch points 2.

rEhe semaphore rod has secured thereto the usual outstanding` arm 38 to which is pivoted Vthe switch oaeratino' lever 39 the said lever designed to be received inspaced notches in the head i0 of the switch stand, and to be locked in these notches in the usual manner. In the present inst-ance there is attached to the throw lever 24; and to the locking means for the throw arm of the switch lever a strong element such as a flexible chain 41. As the throw lever 24 must be swung outwardly with respect to the switch stand 32 it will be noted that this cannot be accomplished as long as the throw arm for the switch is locked.

The locking means, of course, may be readily released so that the switch may be operated in the usual manner from the switch stand, but when the lever 24 is swung` to bring its latching blocks into the lower notches on the stand 22 a longitudinal movement will be imparted to the slide bar 9 which causes the locking plate 12 to have its pivot 18 ride in the upwardly disposed angle slots 1'? and thereby elevate this end of the llocking plate to bring its shoulder into locking engagement with the outer edge of the base flange of the switch rail and to edectively lock the switch rail against the main rail.

Having described the invention, we claim: 1. In combination with a railway switch, means for locking the switch point to the main rail, comprising a plate having an olfset end which is pivotally supported, and

which has its top edge notched, one of the end walls provided by the notch having a hooked extension to overlie the outer base flange of the main rail, a slide bar, guides therefor, said slide bar being arranged against the plate and having an angle notch therethrough, a pin passing through the plate and received in the notch, a crank shaft to which the slide bar is connected, a throw lever for the crank shaft and means for locking the throw lever when swung to move the slide bar to swing the locking plate to bring the base flanges of the rails into and in contacting engagement with the walls of the notch, or when swung to lower the plate to permit of the movement of the switch rail.

2. in combination with a railway switch, and operating means therefor including a switch stand carrying a semaphore arm, a throw arm pivotally associated with the semaphore arm and received in notches in the switch stand, of a locking means for holding the switch rail against the main rail, comprising spaced guides, a plate having an offset end pivotally secured in one of said guides, said plate having its upper edge notched and one wall of the notch being formed with a hooked extension to overlie the outer base flange of the main rail, a slide bar movable through the remaining guides, said slide bar having an vangle upwardly directed notch therethrough, a bolt member passing through the locking plate and received through said opening, a two-part stand disposed opposite the switch stand, a shaft journaled through the stand and having a cranked end to which the slide bar is connected, said stand including spacedsegmental plates having upper and lower pairs of alining notches therethrough, blocks spring influenced into said notches, and said blocks being guided through the lower port-ion of the throw lever, a rod connected with the blocks, a hand operating lever for the rod pivotally secured to the throw lever and a chain secured to the handle portion of the throw lever and designed to be connected with the `locking means for the throw arm of the switch stand.

In testimony whereof we affix our signatures.

EMIL W. MAVES. VALTEB B. MEWS. 

